You picked it up during a quest that required you to unlock a large coffin that imprisioned a Dragon Priest. The skull was one of the "keys." After the quest it serves no purpose other than being a trophy for your collection.

There are three such items in total: - Skull - Torsten's Skull - Saerek's Skull

You picked it up during a quest that required you to unlock a large coffin that imprisioned a Dragon Priest. The skull was one of the "keys." After the quest it serves no purpose other than being a trophy for your collection.

You picked it up during a quest that required you to unlock a large coffin that imprisioned a Dragon Priest. The skull was one of the "keys." After the quest it serves no purpose other than being a trophy for your collection.